Removing the coolant hose from the coolant radiator to the thermostat
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Hot fluids
.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
CAUTION:
Materials harmful to health
.
Contact with fluids harmful to health!
Contact with fluids harmful to health!
- Note and follow safety instructions on containers.
- Conduct all work in appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to REMOVING THE FRONT-END STRUT .
- Refer to REMOVING THE RIGHT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
- Refer to DRAINING COOLANT .
- Refer to REMOVING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
- Refer to REMOVING SEAL FOR FRONT HOOD .
- Refer to REMOVING THE COVER FOR THE CENTER ENGINE COMPARTMENT .
- Refer to REMOVING UPPER CROSS CONNECTION .
- Refer to REMOVING THE REAR TOP CROSS CONNECTION .
- Refer to REMOVING THE FAN COWL .
- Refer to REMOVING AUXILIARY COOLANT PUMP FOR THE EXHAUST TURBOCHARGER .
WARNING:
Hot fluids
.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE:
TECHNICAL INFORMATION
Notes on work at the cooling system form the basis of these repair instructions and must be complied with at all times.
For additional information see: NOTES FOR WORKING ON THE COOLING SYSTEM (M4 2021-2023) .
Notes on work at the cooling system form the basis of these repair instructions and must be complied with at all times.
For additional information see: NOTES FOR WORKING ON THE COOLING SYSTEM (M4 2021-2023) .
- Unlock and open the holder (1) .
- Feed out the coolant line (2) and set it aside.
- Unlock and detach the coolant line (4) in the marked area (3) .
- Catch and dispose of escaping coolant.
- Feed out coolant line (4) and remove.